10 Apr 2015 — PNW Migration Update

It was a Pacific Flyway party last night.  Heavy migration from San Diego to Seattle.  Birds definitely took advantage of the south winds associated with the leading edge of the incoming cold front.

I threw in a snapshot of the National Composite radar today for another look at the interaction of weather and migration.  With a big storm front draped across the central part of the country it is easy to see migration out in front of it and nothing immediately behind it.

A few more Purple Martin reports in the Portland area but that’s about it.  The big push is just around the corner as the Central Valley is loaded with migrants.

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